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学者姓名：郑峰
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Abstract ：
With the high proportion of renewable energy integrated into DC distribution networks, their low inertia and weak damping characteristics result in high peak fault currents and rapid rise rates, posing challenges to the breaking capacity and speed of existing DC circuit breakers. Therefore, this paper presents a DC fault current limiter which takes into account ultracapacitor fast-clamped saturated core voltage. The current limiter uses a supercapacitor to rapidly energize the saturated core in series with the main circuit. Upon fault detection, a single phase shift control is used to enable the supercapacitor to discharge quickly, generating a specific slope current in the saturated core to clamp its voltage, thereby effectively suppressing the fault current amplitude. In addition, a current differential criterion is used to distinguish transient and permanent faults. For transient faults, the system executes self-recovery without circuit breaker operation. For permanent faults, the clamping voltage of the saturated core is further increased to force the fault line current to zero, enabling the rapid operation of the DC circuit breaker to isolate the faulty section. Finally, a multi-terminal DC distribution network simulation system is established to verify the effectiveness of the proposed current limiter. The results show that the proposed current limiter can effectively suppress the fault current and eliminate the negative impact of faults on non-fault regions. © 2025 Power System Protection and Control Press. All rights reserved.
Keyword ：
Clamping devices Clamping devices DC distribution systems DC distribution systems Electric power system control Electric power system control Electric power system protection Electric power system protection Fault current limiters Fault current limiters Geophysical prospecting Geophysical prospecting Potash deposits Potash deposits Renewable energy Renewable energy
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| GB/T 7714 | Zheng, Feng , Huang, Wenfeng , Lin, Yanzhen et al. Transient characteristics of a DC fault current limiter considering supercapacitor fast-clamped saturated core voltage [J]. | Power System Protection and Control , 2025 , 53 (8) : 105-116 . |
| MLA | Zheng, Feng et al. "Transient characteristics of a DC fault current limiter considering supercapacitor fast-clamped saturated core voltage" . | Power System Protection and Control 53 . 8 (2025) : 105-116 . |
| APA | Zheng, Feng , Huang, Wenfeng , Lin, Yanzhen , Liang, Ning , Liu, Baojin . Transient characteristics of a DC fault current limiter considering supercapacitor fast-clamped saturated core voltage . | Power System Protection and Control , 2025 , 53 (8) , 105-116 . |
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To further enhanoe the economio efficiency and current-limiting Performance of power-electronic-based current limiters, an optimized configuration method for fault current-controlled limiter(FCCL) considering multiple factors is proposed. The fault process of FCCL is analyzed,and expressions for the fault current in the line and the voltage between Converter Station poles, considering the FCCL,are derived. By incorpo-rating the aging factor into improved current limiter lifespan prediction model, the predicted lifespan is re-duced by over 30% compared to traditional models, making the estimation more accurate and reasonable. The simplification strategy for independent variables is introduced, addressing the imbalance between cost of different types of current-limiting elements and impulse current limitation Performance, which simplifies the solving process. Taking the cost, impulse current limitation Performance and current limiter predicted lifespan as the objective functions,the Pareto-optimal Solution set is obtained by the improved multi-objective grey wolf optimization algorithm, and the solving efficiency is improved by more than 26%. An optimization case study is conducted in a 9-node DC System, the results show that the proposed method provides high solving efficiency and accuracy. © 2025 Electric Power Automation Equipment Press. All rights reserved.
Keyword ：
Boolean functions Boolean functions DC distribution systems DC distribution systems Electric fault location Electric fault location Electric machine control Electric machine control Fault current limiters Fault current limiters Multiobjective optimization Multiobjective optimization Pareto principle Pareto principle Voltage regulators Voltage regulators
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| GB/T 7714 | Zheng, Fen , Huang, Yuncong , Liang, Ning et al. Optimized configuration method for fault current-controlled limiter considering multiple factors [J]. | Electric Power Automation Equipment , 2025 , 45 (5) : 168-176 . |
| MLA | Zheng, Fen et al. "Optimized configuration method for fault current-controlled limiter considering multiple factors" . | Electric Power Automation Equipment 45 . 5 (2025) : 168-176 . |
| APA | Zheng, Fen , Huang, Yuncong , Liang, Ning , Lin, Yanzhen , Yang, Fan , Liu, Baojin . Optimized configuration method for fault current-controlled limiter considering multiple factors . | Electric Power Automation Equipment , 2025 , 45 (5) , 168-176 . |
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A grid-forming converter (GFM) controls power output by adjusting the phase angle and amplitude of its output voltage, providing voltage and frequency support to the power system and effectively enhancing system stability. However, it has limitations in current control, influencing the current only indirectly through voltage regulation, which results in weaker control over current waveform quality. In the context of a large number of renewable energy generation units being connected to the grid, harmonics in the grid voltage can lead to excessively high harmonic content in the grid current, exceeding standard limits and causing oscillations. To solve this problem, this paper proposes a control strategy of harmonic voltage feedforward compensation to suppress grid current distortion. The proposed control strategy extracts harmonic voltages from the output port of the GFM converter through a harmonic extraction module, processes them via a feedforward factor, and introduces the resulting signals into the converter's control loop as feedforward compensation terms. This allows the converter's output voltage to compensate for the harmonic components in the grid, achieving the improvement of grid current and reducing the total harmonic distortion (THD) value. The effectiveness of the proposed control strategy is verified by simulation results.
Keyword ：
grid current quality grid current quality grid-forming converter grid-forming converter voltage feedforward voltage feedforward
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| GB/T 7714 | Liu, Baojin , Yu, Bing , Zheng, Feng . Grid Current Distortion Suppression Based on Harmonic Voltage Feedforward for Grid-Forming Inverters [J]. | ELECTRONICS , 2025 , 14 (5) . |
| MLA | Liu, Baojin et al. "Grid Current Distortion Suppression Based on Harmonic Voltage Feedforward for Grid-Forming Inverters" . | ELECTRONICS 14 . 5 (2025) . |
| APA | Liu, Baojin , Yu, Bing , Zheng, Feng . Grid Current Distortion Suppression Based on Harmonic Voltage Feedforward for Grid-Forming Inverters . | ELECTRONICS , 2025 , 14 (5) . |
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为进一步提高电力电子型限流器的经济性与限流效果,提出一种计及多元因素的故障电流受控型限流器(FCCL)的优化配置方法.对FCCL的故障过程展开分析,推导出计及FCCL的线路故障电流与换流站极间电压表达式.将老化因数纳入改进型限流器寿命预测模型,相较传统模型寿命预测值减少30%以上,更加精确合理.提出自变量简化策略,解决了求解过程中不同类型限流元件成本与冲击电流限制效果不平衡的问题,简化了求解过程.以成本、冲击电流限制效果、限流器预测寿命为目标函数,通过改进型多目标灰狼优化算法求得Pareto最优解集,求解效率提升26%以上.在9节点直流系统中进行优化配置算例分析,结果表明所提方法具备较高的求解效率与准确率.
Keyword ：
优化配置 优化配置 改进型多目标灰狼优化算法 改进型多目标灰狼优化算法 故障冲击电流 故障冲击电流 电流受控型限流器 电流受控型限流器 直流配电网 直流配电网
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| GB/T 7714 | 郑峰 , 黄云聪 , 梁宁 et al. 计及多元因素的故障电流受控型限流器优化配置方法 [J]. | 电力自动化设备 , 2025 , 45 (5) : 168-176 . |
| MLA | 郑峰 et al. "计及多元因素的故障电流受控型限流器优化配置方法" . | 电力自动化设备 45 . 5 (2025) : 168-176 . |
| APA | 郑峰 , 黄云聪 , 梁宁 , 林燕贞 , 杨帆 , 刘宝谨 . 计及多元因素的故障电流受控型限流器优化配置方法 . | 电力自动化设备 , 2025 , 45 (5) , 168-176 . |
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Abstract ：
新能源高比例接入直流配电网,其低惯量、弱阻尼特性将导致故障电流峰值大、上升速率快,给现有直流断路器的开断容量、速度带来挑战.因此,提出一种计及超级电容快速钳位饱和铁芯电压的直流故障限流器.该限流器利用超级电容器对串联于主电路的饱和铁芯快速供能,在检测到故障后通过单移相控制使超级电容快速放电,在饱和铁芯上产生特定斜率电流以钳位饱和铁芯电压,进而有效抑制故障电流幅值.此外,根据电流微分判据识别瞬时性/永久性故障:瞬时性故障时,执行无断路器动作行为的系统自恢复;永久性故障时,进一步抬升饱和铁芯钳位电压使故障线路电流过零,直流断路器快速动作、隔离故障线路.最后,搭建多端直流配电网仿真系统验证所提限流器的有效性.结果表明所提限流器能够有效抑制故障电流,消除故障区域对非故障区域的负面影响.
Keyword ：
故障限流和隔离 故障限流和隔离 直流配电网 直流配电网 超级电容 超级电容 钳位电压 钳位电压 饱和铁芯 饱和铁芯
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| GB/T 7714 | 郑峰 , 黄雯锋 , 林燕贞 et al. 计及超级电容快速钳位饱和铁芯电压的直流故障限流器暂态特性研究 [J]. | 电力系统保护与控制 , 2025 , 53 (8) : 105-116 . |
| MLA | 郑峰 et al. "计及超级电容快速钳位饱和铁芯电压的直流故障限流器暂态特性研究" . | 电力系统保护与控制 53 . 8 (2025) : 105-116 . |
| APA | 郑峰 , 黄雯锋 , 林燕贞 , 梁宁 , 刘宝谨 . 计及超级电容快速钳位饱和铁芯电压的直流故障限流器暂态特性研究 . | 电力系统保护与控制 , 2025 , 53 (8) , 105-116 . |
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The issue of DC fault ride-through can now be resolved in a novel way thanks to flexible current limiting technology, but its practical worth cannot be realized due to flaws in the technology. This study examines the placement of a controlled current source on the secondary side of a current limiting inductor and the enhancement of clamping voltage stability on the primary side of a current limiting inductor from the standpoint of controlling flexible current limiting technology. It offers a theoretical foundation for the specified secondaryside controlled source through an analysis of the iron core's inductance properties. Two-degree-of-freedom algorithm and model predictive control are combined in a control strategy that is appropriate for flexible current limiting devices to address the issue of inadequate response time and control accuracy under standard control. In MATLAB/Simulink simulation software, the presented theory's soundness is lastly confirmed.
Keyword ：
Controlled source Controlled source DC system DC system Flexible current limiter Flexible current limiter Model predictive control Model predictive control Two -degree -of -freedom Two -degree -of -freedom
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| GB/T 7714 | Zheng, Feng , Wang, Weidong , Zhong, Hao et al. The flexible current limiting device's optimization method and improved control technique [J]. | INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS , 2024 , 158 . |
| MLA | Zheng, Feng et al. "The flexible current limiting device's optimization method and improved control technique" . | INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 158 (2024) . |
| APA | Zheng, Feng , Wang, Weidong , Zhong, Hao , Liang, Ning , Lin, Yanzhen . The flexible current limiting device's optimization method and improved control technique . | INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS , 2024 , 158 . |
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Fault isolation is an important technology to help guarantee that a DC system can be operated stably. A new fault isolation strategy is proposed to improve the traditional strategy which relies too much on a high-performance DC circuit breaker (DCCB). The new strategy makes use of the coordination between a flexible current limiting device (FCLD) and a DCCB. First, the cooperative mechanism between the FCLD and DCCB under permanent fault and transient fault is researched. Second, the arc transient characteristic of the interruption of the DCCB considering suppressed current from the FCLD is analyzed. Finally, a simulation is carried out on the Matlab/Simulink platform to verify the feasibility of the new cooperative strategy. The results show that FCLD can inhibit the breaking arc effectively; with this new fault isolation strategy, the DC system can finish ride through smoothly in the transient fault, while the DCCB can complete the no arc break in the permanent fault. The new strategy has reduced the breaking requirements for DCCB in terms of the DC system’s fault isolation, and improved the fault ride-through capability of the DC system. © 2024 Power System Protection and Control Press. All rights reserved.
Keyword ：
Electric circuit breakers Electric circuit breakers Electric power system protection Electric power system protection Flexible electronics Flexible electronics MATLAB MATLAB Simulation platform Simulation platform Timing circuits Timing circuits
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| GB/T 7714 | Zheng, Feng , Wang, Weidong , Liu, Baojin et al. Research on transient characteristic of arc suppression considering the joint operation of a flexible current limiting device and a DC circuit breaker [J]. | Power System Protection and Control , 2024 , 52 (2) : 60-69 . |
| MLA | Zheng, Feng et al. "Research on transient characteristic of arc suppression considering the joint operation of a flexible current limiting device and a DC circuit breaker" . | Power System Protection and Control 52 . 2 (2024) : 60-69 . |
| APA | Zheng, Feng , Wang, Weidong , Liu, Baojin , Liu, Wanling , Liang, Ning . Research on transient characteristic of arc suppression considering the joint operation of a flexible current limiting device and a DC circuit breaker . | Power System Protection and Control , 2024 , 52 (2) , 60-69 . |
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Abstract ：
已有限流器优化配置方法大多以电阻、电感型限流器为配置对象,且只考虑每条线路均配置限流器的工况,降低系统经济效益,因此提出一种计及新型柔性直流限流器(novel flexible fault current limiter,NFFCL)运行特性、位置、数量等因素的优化配置方法.首先基于换流站和NFFCL简化模型,构建含NFFCL直流系统故障电流计算模型,并在 5 节点直流系统验证其准确性;其次,以NFFCL成本、限流效果为目标函数,以断路器最大开断电流为约束条件,构建多目标优化配置模型,并对NSGA-Ⅱ算法中的拥挤度计算进行改进,以实现优化配置过程中 NFFCL 安装数量与容量的解耦;最后,采用改进拥挤度计算的 NSGA-Ⅱ算法求解得到 11 节点直流系统的NFFCL优化配置方案,并通过限流器成本、安装数量、限流效果之间的关系选取最终方案.
Keyword ：
NSGA-Ⅱ算法 NSGA-Ⅱ算法 优化配置 优化配置 多端直流系统 多端直流系统 故障电流计算 故障电流计算 柔性限流器 柔性限流器
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| GB/T 7714 | 郑峰 , 郑泽楠 , 孙涛 et al. 计及多元因素新型柔性限流器在多端直流系统中的优化配置方法 [J]. | 高电压技术 , 2024 , 50 (5) : 2078-2087,中插23-中插26 . |
| MLA | 郑峰 et al. "计及多元因素新型柔性限流器在多端直流系统中的优化配置方法" . | 高电压技术 50 . 5 (2024) : 2078-2087,中插23-中插26 . |
| APA | 郑峰 , 郑泽楠 , 孙涛 , 伍仰金 , 郑传良 , 陈志东 . 计及多元因素新型柔性限流器在多端直流系统中的优化配置方法 . | 高电压技术 , 2024 , 50 (5) , 2078-2087,中插23-中插26 . |
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In order to realize the low-carbon emission of power system and boost the economic growth, a bi-level optimal dispatching strategy based on the demand response considering nodal carbon intensity is proposed, which uses the model of carbon intensity guided multivariate flexible load as basic. First, by using the principle of proportional sharing to track the carbon emission flow, a carbon emission flow model is built, and the carbon intensity variation law of each node is perceived from a spatiotemporal dimension. Then, the carbon flow analysis is incorporated into the load-side demand response mechanism, the nodal carbon intensity is used to establish the carbon emission model of demand response for load aggregators, and the dispatching differences of load aggregators under different carbon intensities are clarified to build a bi-level optimal dispatching model of power system based on demand response considering nodal carbon intensity. The upper-level of the model is the optimal economic dispatching of power grid operators, and the lower-level of the model is the demand response economic dispatching of load aggregators. Finally, the effectiveness of the proposed method is verified by a modified IEEE 30-bus system. © 2024 Automation of Electric Power Systems Press. All rights reserved.
Keyword ：
Carbon Carbon Economic analysis Economic analysis Electric load dispatching Electric load dispatching Electric power system economics Electric power system economics
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| GB/T 7714 | Liang, Ning , Fang, Qian , Xu, Huihui et al. Bi-level Optimal Dispatching of Power System Based on Demand Response Considering Nodal Carbon Intensity [J]. | Automation of Electric Power Systems , 2024 , 48 (9) : 44-53 . |
| MLA | Liang, Ning et al. "Bi-level Optimal Dispatching of Power System Based on Demand Response Considering Nodal Carbon Intensity" . | Automation of Electric Power Systems 48 . 9 (2024) : 44-53 . |
| APA | Liang, Ning , Fang, Qian , Xu, Huihui , Zheng, Feng , Miao, Meng . Bi-level Optimal Dispatching of Power System Based on Demand Response Considering Nodal Carbon Intensity . | Automation of Electric Power Systems , 2024 , 48 (9) , 44-53 . |
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In order to solve the problems of weak bidding ability and difficult market accommodation in high proportion wind power market，a bi-level Stackelberg game model of high proportion wind power coupled hydrogen energy storage system participating in spot market bidding is proposed. Firstly，the internal energy conversion relationship of the wind-hydrogen coupling system is studied，and the energy'time-space translation'mechanism of the wind-hydrogen coupling system is revealed. Considering the benefits of the wind-hydrogen coupling system and the cost of wind curtailment，the wind power bidding and hydrogen energy storage charging and discharging decision models are established. Secondly，taking into account the interests of wind- hydrogen coupling system and independent system operators，a market clearing model with thermal power units and wind-hydrogen coupling system as the main body is established based on Stackelberg game. Finally，aiming at the difficulty of solving the two-layer model，the KKT（Karush-Kuhu-Tucker）condition and strong duality theory are used to transform the bi-level model into a single-level mixed integer programming model which is easy to be solved. The simulation results show that the proposed strategy has played a positive role in the market consumption of high proportion of wind power. © 2024 Science Press. All rights reserved.
Keyword ：
Electric utilities Electric utilities Fossil fuel power plants Fossil fuel power plants Game theory Game theory Hydrogen storage Hydrogen storage Integer programming Integer programming Thermoelectric power plants Thermoelectric power plants Wind power Wind power
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| GB/T 7714 | Liang, Ning , Pan, Zhengnan , Xu, Huihui et al. BIDDING STRATEGY AND OPTIMAL DISPATCHING METHOD OF WIND-HYDROGEN COUPLING SYSTEM PARTICIPATING IN SPOT MARKET [J]. | Acta Energiae Solaris Sinica , 2024 , 45 (2) : 351-359 . |
| MLA | Liang, Ning et al. "BIDDING STRATEGY AND OPTIMAL DISPATCHING METHOD OF WIND-HYDROGEN COUPLING SYSTEM PARTICIPATING IN SPOT MARKET" . | Acta Energiae Solaris Sinica 45 . 2 (2024) : 351-359 . |
| APA | Liang, Ning , Pan, Zhengnan , Xu, Huihui , Zheng, Feng , He, Xiyu , Zhang, Jiangyun . BIDDING STRATEGY AND OPTIMAL DISPATCHING METHOD OF WIND-HYDROGEN COUPLING SYSTEM PARTICIPATING IN SPOT MARKET . | Acta Energiae Solaris Sinica , 2024 , 45 (2) , 351-359 . |
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